“Trump has long attracted scrutiny for hosting campaign events at his own properties, including the Trump International Hotel – particularly as M Trump retains ownership of his company – though he has placed his assets into a trust managed by his adult sons while he is in office,” Metro News said.

His re-election campaign in 2018 has spent nearly $1 million (£767,000) at Trump-owned properties, including $113,000 (£100,000) at his hotel in Washington alone, the Wall Street Journal reported.

How popular is this means of raising money for election and reelection?

It is becoming one of the methods of raising money for presidential campaigns in the United States, but US has always been a pace setter in democratic ideology, and other countries are likely to adopt the same method in the years ahead.